FORMER inmate Peni Siga relives a $16,000 nightmare every time there's mass death at his fish farm located near Denarau Island.
"This is the seventh time something like this has happened," he said.
Mr Siga started the farm located on Maqalevu almost three years ago after being released from prison.
An initiative he started with a group of other inmates, he said the fish farm was his only source of income.
"The last incident was in 2012 and police confirmed that pesticide was poured into the ponds."
He said about 8000 tilapia were found dead early Friday morning.
"We had just started harvesting the fish on Thursday and when we woke up this morning the rest of the fish were dead.
"It's really upsetting because all of our hard work has been wasted.
"This is also government money going down the drain because we get the fishlings from Naduruloulou Research Station and the Coboni Fish Farm in Ra."
The former inmate has not ruled out foul play.
"I think the same thing that was done in the last incident happened again here.
"We've reported the case to police and I hope that they get to the bottom of this because it is ruining our livelihood."
Police confirm an investigation has been launched into the incident.